PC/3270 Response
PC/3270 receives structured field data and sends it to the host application.
If the data transmission completes successfully, then PC/3270 returns an
ACK message:
WM_DDE_ACK(wStatus, aSF)Otherwise PC/3270 returns an negative ACK message containing one of the following return codes in the low-order byte of wStatus:
| Return Code | Explanation |
|---|---|
| 2 | Length is not valid. |
| 6 | The specified format is not valid. |
| 9 | A system error occurred. |